The rules would be set up in such a way to actively discourage individual accumulation of power as much as possible.
When the state nextdoor rolls in with tanks, aircraft, and warships, how do you push them back? Is the ‘collective enforcement’ armed with such weapons as well, trains together, and has a solid command structure to coordinate and fight back the invader? How do you organize the command structure of your military defense force such that it fits within the ‘collective enforcement’ model, without instantly devolving into a free for all?